现代果树营养研究分析表明,果树所需要的营养元素有氮、磷、钾、钙、铁、镁、硼、锰、锌、铜等10多种。而钙是构成细胞壁的重要组成部分,在树体内与有机酸结合形成不溶性草酸钙,它能够稳定细胞膜,防止细胞内含物外渗,促使果实硬度增加,果皮韧性增强,增强抗病虫力和果实耐贮性,减少裂果、日灼,提高产量,改善品质。 Research and analysis of modern fruit tree nutrition shows that fruit trees need nutrients such as nitrogen, phosphorus, potassium, calcium, iron, magnesium, boron, manganese, zinc, copper and more than 10 kinds of nutrients. Calcium is an important part of the cell wall. It forms insoluble calcium oxalate in the body with organic acids. It stabilizes the cell membrane and prevents the extravasation of cell contents, promotes the increase of fruit firmness, enhances the toughness of peel and enhances the resistance to pests and diseases Fruit storability, reduce cracking, sunburn, improve yield, improve quality.